Selecting Trustworthy Content Using Tags
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The document discusses tools for decentralized content consumption and creation on mobile devices. It proposes several approaches: 1) SocialRanking, which finds relevant content by combining content similarity with user similarity. 2) MobiRate, which allows users to rate sources in a practical and secure way using sealed logs and gossip. 3) Lightweight Distributed Trust Propagation (LDTP), which efficiently propagates trust between users for prediction. 4) TRULLO, which allows users to learn from their own ratings to bootstrap local trust with few ratings. The approaches aim to improve coverage, accuracy, and performance of decentralized recommendation compared to centralized solutions.
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Selecting Trustworthy Content Using Tags
- 1. U C L daniele quercia & licia capra & valentina zanardi
- 2. I’m doing my PhD @
- 3. U niversity C ollege L ondon
- 4. <MobiSys>
- 5. We research distributed sys
- 6. We blog mobblog ucl
- 7. Web 2.0 (mobile: $22.4bn)
- 8. Location?
- 9. The next big thing!
- 11. $8.1 bn
- 12. $8.1 bn
- 13. This talk is about tools for...
- 14. Consuming content on the move
- 15. Content Creation: By publishers?
- 18. People
- 22. create a ...
- 23. Digital Tapestry
- 26. Why?
- 27. Money!
- 28. Making Money? No, short of ideas!
- 29. Wisdom of the (Programming)Crowd
- 30. API
- 31. wired freedom by APIs
- 34. What if...
- 35. Consume: centralized decentralized
- 37. Existing Tools for Internet
- 38. Tools for decentralized consumption
- 39. <1> Query matching <2> Ratings for sources
- 45. similarity(query,item) query item
- 46. similarity(query,item) query item Coverage (digg out content) + Accuracy (no good content) -
- 47. Idea behind SocialRanking [RecSys08] Social Ranking:Finding Relevant Content in Web 2.0
- 51. issuer tagger similarity(issuer,tagger) Coverage (digg out content) Accuracy (good content) + +
- 53. <2> Ratings for sources
- 54. Store & Use & Categories
- 55. Store & Use & Categories
- 56. How to store ratings?
- 57. 1.Log (credentials) 2. Gossip (to check each credential)
- 58. 1.Log (credentials) 2. Gossip (to check each credential) Impractical
- 59. Idea behind MobiRate [Ubicomp08] MobiRate: Making Mobile Raters Stick to their Word
- 60. 1.Sealed Log (of credentials) 2. Gossip (to check seals only)
- 61. 1.Sealed Log (of credentials) 2. Gossip (to check seals only) Practical
- 63. Security: It outperforms existing solutions
- 64. “ heaviest” protocol runs < 2sec
- 65. “ longest” protocol completed in 2.5ms (if Bluetooth 100kb/s)
- 66. Store & Use & Categories
- 67. Use ratings to make predictions
- 70. Idea behind LDTP [ICDM07] Lightweight Distributed Trust Propagation
- 71. Daniele Quercia 1 ? A B C 2
- 72. Daniele Quercia 1 ? A B C 2 ? new graph f 1 2 A B A C C B
- 73. Daniele Quercia 1 ? A B C 2 ? new graph “ good” rating function f 1 2 A B A C C B
- 75. Daniele Quercia Useful? Tested on real data (Advogato: > 55K user ratings)
- 76. Daniele Quercia Useful? Tested on real data (Advogato: > 55K user ratings)
- 77. Daniele Quercia Fast and “Light”?
- 79. Store & Use & Categories
- 80. Greek Coins Roman Coins Coins Chairs Antiques universal ontology
- 81. Idea behind TRULLO [MobiQuitous07] TRULLO - local trust bootstrapping for ubiquitous devices
- 88. Daniele Quercia Nokia 3230
- 89. Daniele Quercia
- 90. Daniele Quercia
- 91. Store & Use & Categories
- 93. Issues: many!
- 95. Issue 2: Privacy
- 96. If you are looking for Kinky boots
- 97. whether you are …
- 98. a woman…
- 99. or a man a woman…
- 100. Thorny problem:
- 101. … or a woman… How to keep it secret
- 102. Issue 2: Privacy
- 104. All this on ... mobblog ucl